Hi guys,

here are the original Audi engine circuit diagrams of the german S4 (265HP/195KW, AGB & AZB, 8D0907551D), and the german RS4 (380HP/280KW, ASJ 8D0907551F & AZR 8D0907551K/Q).
Sorry, but it`s only in german.

Sorry again, but there is no circuit diagram for the US S4 with APB engine found in the german ELSA docu.

I can confirm this. I put RS4 ECU in my S4, and had the cam sensor fault code. I used S4 wiring harness, and it uses one same wire to the both sensors. RS4 uses one to each sensors. The car worked ok even with the fault code, it was just that the ECU thinks that the other sensor can't get power because the wire is not connected. But actually it is, and you can see the camshaft timing values from block 091-093.

No it is not important. Both sensors will get the power anyway. But as someone said earlier, it is easy to connect wore to the pin 115 of you want.

This is funny, I used RS4 ECU, and my tuner put M-box file in to it Just the opposite as wanted here

DTC table address is 0x12FA4
DTC error class table address is 0x10689

My car has been down for a while, fixing my AC compressor, but I plan on getting it together in the next week-ish, so I'll be able to do some experimenting.


Here's an excerpt from an email I just sent Julex, explaining my thoughts and intended plan of action on this:

"  So, it seems like things for us have to go like this.
1. Get a developed .xdf.  RS4boost posted a huge .kp, and if I'm not mistaken nyet has a program that turns the .kp into a nice .xdf.  Maybe that's something one of us should talk to him about.  Otherwise, prj has posted on the forums an .xdf that he autogenerated.  Also, nehalem sounds like he has since done more work on it, so maybe we should get his updated version before trying to do any more work on that.  We need to get unified on the .xdf development front so that effort isn't wasted.  But as-is, we have enough info to get an M-box car tuned with a K-box.

2. So, prepared with a K-box tune with the basic maps switched in the K-box with my values for fueling, maf etc, I think I'm going to flash an immo defeated K-box 95040 EEPROM with ArgDub's flasher, flash the K-box .bin (via Galletto boot mode if NefMoto won't), and I think everything should work.  Nehalem's issues with the VARDEF and all that I think will be cured by flashing the K-box 95040, which he hasn't done yet.  Eventually I actually plan on getting an immo ignition coil, RFID chip for my key, and adapting my cluster to the K-box, having immo active.

3.  With a running box, I think the pressing (not sure how pressing) issues are coding out the RS4 intake air flap (prj posted solution here http://nefariousmotorsports.com/forum/index.php?topic=2342.msg24639#msg24639 ), coding out the 2nd bank camshaft adjuster DTC (which seems like we should be close to finding, with the DTC table prj listed in the post below the last one linked), and tuning out the oil temp based rev limiter (referenced here http://nefariousmotorsports.com/forum/index.php?topic=2169.msg20878#msg20878 ).

4.  Once those are good, I think then we worry about tweaking the throttle body/plate and knock recognition stuff from the APB.

5.  After that, I'd love to figure out the map locations for all of the pressure conversion maps, and throw a 4-bar MAP sensor in there.  And also LC, NLS, and map switching.


Those are my thoughts on the whole thing at least.  I think someone could have an M-box car running on a K-box in one night if they just flash the immo defeated EEPROM and K-box bin modified for their hardware."

Did anyone ever get a 551K bin working on a 551M ecu? it seems like all the information is here...

I don't know, I haven't had too many issues - it all has been manageable so far